Re: [PATCH v2 08/44] cpuidle,imx6: Push RCU-idle into driver
From: Frederic Weisbecker <frederic@kernel.org>
Date: 2022-09-20 09:02:08
Also in:
linux-acpi, linux-alpha, linux-arch, linux-arm-msm, linux-clk, linux-m68k, linux-mips, linux-omap, linux-perf-users, linux-pm, linux-riscv, linux-s390, linux-sh, linux-tegra, linux-um, lkml, loongarch, sparclinux
On Tue, Sep 20, 2022 at 10:58:59AM +0200, Peter Zijlstra wrote:
On Mon, Sep 19, 2022 at 04:21:23PM +0200, Frederic Weisbecker wrote:quoted
On Mon, Sep 19, 2022 at 11:59:47AM +0200, Peter Zijlstra wrote:quoted
Doing RCU-idle outside the driver, only to then temporarily enable it again, at least twice, before going idle is daft.Hmm, what ends up calling RCU_IDLE() here? Also what about cpu_do_idle()?I've ammended patches 5-12 with a comment like: Notably both cpu_pm_enter() and cpu_cluster_pm_enter() implicity re-enable RCU. (each noting the specific sites for the relevant patch).
Thanks!